5n+15 = 25 5n = 25-15 5n = 10 n = 2

5n + 15 = 25 you subtract 15 from both sides then you get 10 then divided 5n by 10 you get 2n

30

-5n - (-2) = 27 -5n + 2 = 27 -5n + 2 - 2 = 27 - 2 -5n = 25 -5n/-5 = 25/-5 n = -5

5n-2+2=4n 5n=4n n=0

5n - 4 = 10n + 6-5n = 10n = -2

-5n+9=-46 -5n+9-9=-46-9 -5n=-55 -5n/-5=-55/-5 n=11

5n+6=-45n=-10n=-2

n=8

Whatever your value of n is, you need to multiply it by 5 and then add 2 to get your answer. Below is how to solve it algebraically: 5n+2 = 0 (it needs to be equal to something in order to solve it, so I assumed that it equals zero) 5n = -2 n = -2/5

what does the expresstion 5n represent

8n-2+4n = 66-5n 8n+4n+5n = 66+2 17n = 68 n = 4

3n + 2n = 25 5n = 25 n = 5

9-5n+1 = 15 -5n = 15-9-1 -5n = 5 Divide both sides of the equation by -5 to find the value of n: n = -5

9 - 5n + 1 = 15 -5n = 15 - 10 n = -5/5 n = -1

5n + 1 = 10 + 2n5n - 2n + 1 - 1 = 10 - 1 + 2n - 2n3n = 93n/3 = 9/3n = 3

1 - 7n = 15 - 5n Add 5n to each side: 1 - 7n + 5n = 15 -5n + 5n ie 1 - 2n = 15; subtract 1 from each side: -2n = 14 divide both sides by -2: n = -7

-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4

5n + 10 = 10 5n = 10 - 10 5n = 0 n = 0 taylor101119: well i thought it was 5*n+5*2=10 i thought n=1 but i'm pretty sure it's the one ontop^

5n - 10 = 0 5n - 10 (+10) = 0 (+10) 5n (/5) = 10 (/5) n = 2

8n2 - 5n - 11 = 8 8n2 - 5n - 19 = 0 This cannot be factorised so use the quadratic formula: n = [5 +/- sqrt(52 + 4*8*19)]/(2*8) = [5 +/- sqrt(25 + 608)]/16 = [5 +/- sqrt(633)]/16 = [5 +/- sqrt(25.1595)]/16 = -1.25997 or 1.88497

To solve the equation 5n - 7 = 38, do whatever you do to one side of the equals sign to the other. So, add 7 to both sides. 5n = 38. Now divide both sides by 9. 5 = 9. To check your answer, replace the n with 9 and solve the equation. 5 x 9 - 7 = 38. Do the multiplacation first. 45 - 7 = 38. 38 = 38. The answer is correct.

5n+4 = -26 5n = -26-4 5n = -30 n = -6

5n+4=0 5n=-4 n= -4/5

5 Since there is a minus sign in front of the 4, you would first add four to itself and 21 to get 25 and then have 5n=25 (in terms of canceling out four). Next, divide 5n by itself (5) and 25 to get 5. So thus, n=5 (More improved answer by -iRoqNikes)

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